This interesting monument is situated on an eminence a little less elevated than that on which the castle is built, and south-westward from it. Its whole height is about 36 ft. The base or pedestal measures 16 ft. 8¾ in. on the W. and E., and 16 ft. N. and S. Its elevation varies greatly from E. to W., on account of the sloping ground, the eastern side measuring 3 ft. 2 in., the western 5 ft. 7 in. In the interior of this base is the sepulchral chamber, measuring 7 ft. 1 in. from N. to S., and 6 ft. 6 in. from E. to W., and remarkable for the peculiar construction of the roof. Upon this lowest part of the base rises a second one 15 ft. 9 in. W. and E., 14 ft. 3¾ in. N. and S., and 2 ft. 1 in. high; and on this a third one, measuring 14 ft. 7½ in. W. and E., 13 ft. 10¼ in. N. and S., and 1 ft. 7 in. in height. Upon this base rose the principal part of the monument, 13 ft. 7 in. high, and measuring at its foot 13 ft. 11½ in. W. and E., decorated at the corners with pilasters, the feet of which measure 1 ft. 1¾ in., and the shaft 9¾ in. The moulding is handsomely decorated. Upon this principal body of the monument is constructed the upper story, about 10 feet high, decorated with pilasters of the Corinthian order. On the south and west sides the walls are plain; but on the east side they are ornamented with a bow window enclosed with pilasters of the same order, and on the north side with a plain window running up the whole height of the body. Inside of this chamber stood, probably, the statue of the person in whose honour the monument was erected. The upper compartment has a plain moulding about four feet high, and surmounted by a cornice. The material of this interesting monument is a very fine limestone, which under the influence of the atmosphere has received a vivid brownish colour, almost like that of travertine. It was taken from a quarry, which extends all round the monument, and is full of caverns now used by shepherds as resting-places when they tend their flocks hereabouts.